Lubricant



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2,410,610 maroan'r and n. Pickett, Gklahoma City, okia, assignor to Phillips letroleum Company, a corporation of Delaware No Drag. Application August 12, 1944, Sl No. M9294 6 Claims. (on. 252-37) 1 This invention relates to a specialized lubricant and a method or preparing it.

The main object of the invention is to provide a lubricant which will be insoluble in hydrochloric acid, aluminum chloride, hydrocarbons and mixtures thereof and which will maintain its lubricating and other physical properties at temperatures up to 300 F.

Another object of the invention is to provide a lubricant for general use but particularly adapted for lubricating plug valves and the like used on conduits through which corrosive fluids flow as, for example, catalysts used in various processes common to oil technology.

This invention resides substantially in the steps and series of steps all as will be hereinafter disclosed.

In accordance with this invention, in the production of a lubricant within the objects thereof, a mixture is prepared comprising approximately 75% by weight of aluminum soap and 2.5%

of lead soap. This mixture is prepared .in the following manner: A sodium soap and alum dissolved in water are mixed. The mixture is heated to approximately 190 F. so that the aluminum soap will form as a coagulate. The free liquid is then oured off and the aluminum soap washed until no lather is formed. To prepare the lead soap a sodium soap is mixed with lead acetate and dissolved in'water. The water is boiled oil producing a lead soap which is quite hard. The aluminum soap and the lead soap thus prepared are mixed in approximately the proportions of 3 to 1 by weight to which water is added and the mixture heated to a temperature of 300 F. At this temperature it is relatively easy to eilect a thorough mixture of the two soaps. After cooling the lubricant can be rolled into sticks or other suitable forms for use in the lubrication of valves and the like. Should it be desirable to use this lubricant in pressure guns some solvent such as carbon tetrachloride can be mixed in to decrease its viscosity.

A lubricant prepared in this manner is insoluble in aluminum chloride, hydrogen chloride, hy-

drocarbons and mixtures thereof and has a use-- I ful consistency at temperatures as high as 300 F.

The proportions of the ingredients recited for purposes of illustration are not critical and are adaptable to variation over a reasonably wide range. I do not, therefore, desire to be strictly limited to the disclosure as given for purposes of illustration but rather to the scope of the claims ranted me.

What is claimed is:

1. A lubricant consisting of a mixture of. aluminum. soap and lead soap in the ratio of the order of three to one by weight.

2. A lubricant consisting of a mixture of aluminum soap and lead soap in the proportion weight ratio of about three to one dissolved in suffl'cient solvent therefor to permit grease gun use, said lubricant being substantially insoluble in acids and petroleum hydrocarbons.

3. A lubricant consisting of a mixture of aluminum soap and lead soap in the proportions of approximately 3 to 1 by weight.

4. A lubricant consisting of a mixture of aluminum soap and lead soap in the proportions of approximately 3 to 1 by weight in sumcient solvent therefor to permit grease gun use, said lubricant being substantially insoluble in acids and petroleum hydrocarbons.

5. A lubricant consisting of a mixture of aluminum soap and lead soap dissolved in carbon tetrachloride in suflicient quantity to permit of use in a grease gun.

6. A lubricant consisting of a mixture of aluminum soap and lead soap in the proportions oi.

. approximately 3 to 1 by weight in carbon tetra- 

